Описание
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to git_revparse_single can cause the function to enter an infinite loop, potentially causing a Denial of Service attack in the calling application. The revparse function in src/libgit2/revparse.c uses a loop to parse the user-provided spec string. There is an edge-case during parsing that allows a bad actor to force the loop conditions to access arbitrary memory. Potentially, this could also leak memory if the extracted rev spec is reflected back to the attacker. As such, libgit2 versions before 1.4.0 are not affected. Users should upgrade to version 1.6.5 or 1.7.2.
A flaw was found in libgit2, a cross-platform, linkable library implementation of Git. This flaw allows an attacker using a specially-crafted payload to git_revparse_single and cause the function to enter an infinite loop. This issue potentially causes a denial of service attack in the calling application.
Отчет
Cargo in Red Hat Enterprise Linux 8 & 9 does use a bundled libgit2. However, cargo does not call git_index_add directly, and the only indirect call I can find is via git_reset, which does not involve any externally-provided paths. Therefore, Red Hat Enterprise Linux should be Not Affected by this CVE.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Developer Tools | rust-toolset-1.66-rust | Not affected | ||
| Red Hat Enterprise Linux 7 | libgit2 | Not affected | ||
| Red Hat Enterprise Linux 8 | libgit2 | Not affected | ||
| Red Hat Enterprise Linux 8 | rust-toolset:rhel8/rust | Not affected | ||
| Red Hat Enterprise Linux 9 | rust | Not affected |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to `git_revparse_single` can cause the function to enter an infinite loop, potentially causing a Denial of Service attack in the calling application. The revparse function in `src/libgit2/revparse.c` uses a loop to parse the user-provided spec string. There is an edge-case during parsing that allows a bad actor to force the loop conditions to access arbitrary memory. Potentially, this could also leak memory if the extracted rev spec is reflected back to the attacker. As such, libgit2 versions before 1.4.0 are not affected. Users should upgrade to version 1.6.5 or 1.7.2.
libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to `git_revparse_single` can cause the function to enter an infinite loop, potentially causing a Denial of Service attack in the calling application. The revparse function in `src/libgit2/revparse.c` uses a loop to parse the user-provided spec string. There is an edge-case during parsing that allows a bad actor to force the loop conditions to access arbitrary memory. Potentially, this could also leak memory if the extracted rev spec is reflected back to the attacker. As such, libgit2 versions before 1.4.0 are not affected. Users should upgrade to version 1.6.5 or 1.7.2.
libgit2 is a portable C implementation of the Git core methods provide ...
Уязвимость компонента src/libgit2/revparse.c реализации методов Git на языке C Libgit2, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3